- unitid
-
{"value"=>"3145403", "type"=>"local_mss"}
- unitdate
-
{"value"=>"December 1959", "type"=>"inclusive", "normal"=>"1959-12"}
{"value"=>"May 1960", "type"=>"inclusive", "normal"=>"1960-05"}
{"value"=>"undated 1959", "type"=>"inclusive"}
- unittitle
-
{"value"=>"Metropolitan Opera House, New York City"}
- scopecontent
-
{"value"=>"<p>Includes Regina Resnik, Frank Valentino, Barbara Troxell, Kurt Baum, Jean Madeira, Zinka Milanov, Teresa Stratas, Blanche Thebom, Gertrude Ribla, and others</p>"}
- container
-
{"type"=>"box", "value"=>"9"}
{"type"=>"folder", "value"=>"4"}
- date_start
-
1959-12
- keydate
-
1959-12
- date_end
-
1960-05
- date_inclusive_start
-
1959
- date_inclusive_end
-
1960